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WO2007030374A2 - Plaque de fixation - Google Patents

Plaque de fixation Download PDF

Info

Publication number
WO2007030374A2
WO2007030374A2 PCT/US2006/034036 US2006034036W WO2007030374A2 WO 2007030374 A2 WO2007030374 A2 WO 2007030374A2 US 2006034036 W US2006034036 W US 2006034036W WO 2007030374 A2 WO2007030374 A2 WO 2007030374A2
Authority
WO
WIPO (PCT)
Prior art keywords
fixation plate
section
base section
leg section
apertures
Prior art date
Application number
PCT/US2006/034036
Other languages
English (en)
Other versions
WO2007030374A3 (fr
Inventor
Harold M. Wotton
Original Assignee
Securos, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Securos, Inc. filed Critical Securos, Inc.
Priority to EP06802710.1A priority Critical patent/EP1922003B1/fr
Publication of WO2007030374A2 publication Critical patent/WO2007030374A2/fr
Publication of WO2007030374A3 publication Critical patent/WO2007030374A3/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates

Definitions

  • This subject invention relates to a bone fixation plate.
  • Bone fixation plates are used in tibial osteotomy and other procedures to secure two bone segments together.
  • a curvilinear cut is made in the canine proximal tibia to separate the metaphysis from the proximal tibia.
  • the metaphysis is rotated to level the tibial plateau.
  • the metaphysis is fixed to the proximal tibia by a fixation plate. See U.S. Patent No. 5,304,180 incorporated herein by this reference.
  • the fixation plate of this patent includes a broad triangular portion to be fixed to the metaphysis of the tibia and a narrower leg section to be fixed to diaphysis of the tibia. There are three bone screw holes in the triangular portion and three bone screw holes in the leg section.
  • fixation plate produced in accordance with this patent is cast from surgical grade stainless steel and thus is relatively thick (approximately 5 mm). Also, there have been reports of an increased tumor occurrences when these fixation plates are used. See "Metallurgical Evaluation of the Slocum TPLO Plate", Boudrieau et al, paper presented at the 32 nd Annual Conference of the Veterinary
  • U.S. Patent Nos. 4,867,144 and 4,988,350 disclose other configurations for bone fixation plates. In many fixation plates, there is a fairly sharp transition between the wide and narrow sections of the fixation plate resulting in a possible weak stress zone subject to breakage.
  • fixation plate useful in tibial osteotomy and other procedures.
  • the subject invention results from the realization that a thinner, lighter weight, and stronger bone fixation plate with no sharp transitions is effected by a base section which tapers smoothly to co-join with a leg section which then continues to taper smoothly to a rounded distal end.
  • a fixation plate comprising a base section including apertures for fixation to one bone segment and a leg section extending from the base section and including apertures for fixation to another bone segment.
  • the expanse of the base section tapers gradually to smoothly cojoin with
  • the expanse of the leg section continues to taper to a distal rounded
  • both sides of the plate are straight and one side smoothly diverges away from the other.
  • the plate is preferably anatomically pre- contoured such that the contour of the base section is different than the contour of the leg section.
  • the contour of the base section is greater than the contour of the leg section and preferably the change in contour is smoothly progressive from
  • a typical fixation plate in accordance with this invention has a maximum thickness of .275" and is made of machined implant grade (certified) stainless steel.
  • One fixation plate in accordance with the subject invention features a base section including apertures and a leg section extending from the base section.
  • the sides of the plate are straight with one side smoothly diverging away from the other
  • a fixation plate in accordance with this invention features a wider base section including at least two spaced elongate apertures each having the same first long axis and a narrower leg section extending from the base section.
  • the expanse of the base section tapers gradually to smoothly cojoin with the leg section and the expanse of the leg section continues to taper to a distal rounded end of the leg section.
  • Fig. 1 is a schematic front view of a bone fixation plate in accordance with the prior art
  • Fig. 2 is a front view of another bone fixation plate in accordance with the prior art
  • Fig. 3 is a schematic top view of one example of a bone fixation plate in accordance with the subject invention.
  • Fig. 4 is a schematic bottom view of the bone fixation plate shown in Fig. 3;
  • Fig. 5 is a another schematic top view of a bone fixation plate in accordance with the subject invention.
  • Fig. 6 is another view of the bone fixation plate shown in Fig. 5;
  • FIGS. 7-8 are schematic views of another example of a bone fixation plate in
  • the tibial osteotomy fixation plate 10, Fig. 1 of patent No. 5,304,180 is shown spanning curvilinear cut C wherein triangular portion 12 is to be attached to the metaphysis and leg portion 14 is to be attached to the tibia using bone screws (not shown) seated in apertures 16a-f.
  • plate 10 is cast from surgical grade stainless steel and thus is relatively thick (approximately 5 mm) and possibly toxic.
  • the somewhat sharp transition at area 18 between triangular portion 12 and leg 14 results in a weak area in region 19.
  • T- shaped fixation plate 20, Fig. 2 includes base section 22 and leg section 24.
  • the transition at areas 26 and 28 of this prior art fixation plate can also result in a weak area in region 30.
  • fixation plate 40 includes base section 42 including apertures 44a, 44b, and 44c for fixation to one
  • bone segment e.g., the medial segment
  • leg section 46 including apertures 48a, 48b, and 48c for fixation to another bone segment (e.g., distal segment (diaphysis)).
  • the expanse of base section 42 preferably tapers gradually to smoothly co-join with leg section 46 which continues to smoothly taper to distal rounded end 50.
  • the proximal end 52 of base section 42 is preferably angled away from the leg section as shown.
  • both sides 54 and 56 of plate 40 are straight and side 56 smoothly diverges, from distal end 50 to proximal end 52, away from side 54. In this way, there are no sharp transitions reducing any weak areas in fixation plate 40 subject to failure.
  • plate 40 is anatomically pre-contoured as shown in Fig. 4 and differently anatomically pre-contoured along the length thereof such that the curvature arc of base section 42 is generally greater than the curvature arc of leg section 46 and the change in contour from distal end 50 to proximal end 52 is smoothly progressive.
  • Plate 40 is anatomically pre-contoured to closely fit the bone surface to which it is applied to reduce the amount of bending prior to fixation.
  • the curvature arc at T 1 was 1.625
  • at r 2 was 1.219
  • at r 3 was .813, and at r 4 was .406.
  • the long axes of spaced elongate apertures 44b and 44c in base section 42, Fig. 3 lie on the same axis L 1 and the centers of spaced round apertures 48b and 48c in leg section 46 also lie on axis L 1 .
  • Third spaced elongate aperture 44b in base section 42 has a second long axis L 2 intersecting axis L 1 at an angle of between 55 and 60°.
  • Third spaced round aperture 48a is offset from axis L 1 and is located at the proximal end of leg section 46.
  • All the elongate apertures in base section 42 preferably have at least one
  • the preferred plate is machined out of surgical implant grade 316L stainless steel and has a thickness of between .175 and .275 ".
  • Table 1 The dimensions in Table 1 below relate to examples of different size plates in accordance with the subject invention as shown in Figs. 5-8. AU values are in inches.
  • the result is an improved bone fixation plate useful in tibial osteotomy and other procedures.
  • the fixation plate of this invention is thinner, lightweight, and

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Neurology (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)
  • Prostheses (AREA)

Abstract

L'invention concerne une plaque de fixation pourvue d'une partie base comportant des ouvertures permettant une fixation à un segment osseux et une partie tige s'étendant à partir de la partie base et comportant des ouvertures permettant une fixation à un autre segment osseux. La partie base s'effile progressivement jusqu'à la partie tige, laquelle continue à s'effiler jusqu'à son extrémité arrondie distale.
PCT/US2006/034036 2005-09-08 2006-08-31 Plaque de fixation WO2007030374A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06802710.1A EP1922003B1 (fr) 2005-09-08 2006-08-31 Plaque de fixation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/221,471 US8177818B2 (en) 2005-09-08 2005-09-08 Fixation plate
US11/221,471 2005-09-08

Publications (2)

Publication Number Publication Date
WO2007030374A2 true WO2007030374A2 (fr) 2007-03-15
WO2007030374A3 WO2007030374A3 (fr) 2007-05-18

Family

ID=37011360

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/034036 WO2007030374A2 (fr) 2005-09-08 2006-08-31 Plaque de fixation

Country Status (3)

Country Link
US (2) US8177818B2 (fr)
EP (1) EP1922003B1 (fr)
WO (1) WO2007030374A2 (fr)

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US7722653B2 (en) 2003-03-26 2010-05-25 Greatbatch Medical S.A. Locking bone plate
DE602004028451D1 (de) * 2003-03-26 2010-09-16 Swiss Orthopedic Solutions Sa Fixierende knochenplatte
WO2006091827A2 (fr) * 2005-02-25 2006-08-31 Regents Of The University Of California Dispositif et gabarit pour osteotomie de lame humerale canine
US20080045960A1 (en) * 2004-03-25 2008-02-21 Bruecker Kenneth Locking tpo plate and method of use
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US8523921B2 (en) 2006-02-24 2013-09-03 DePuy Synthes Products, LLC Tibial plateau leveling osteotomy plate
US8808334B2 (en) * 2006-03-07 2014-08-19 Orthohelix Surgical Designs, Inc. Orthopedic plate
US8267973B2 (en) * 2008-02-27 2012-09-18 Shoulder Options, Inc. Fixable suture anchor plate and method for tendon-to-bone repair
US20100152783A1 (en) * 2008-12-11 2010-06-17 Veterinary Implants Direct, Llc Universal Surgical Plate with 30 Degree Compression Angle
US8986353B2 (en) 2009-07-09 2015-03-24 Orthohelix Surgical Designs, Inc. Osteotomy plate, plate driver and method for their use
CA2825055A1 (fr) * 2011-01-31 2012-08-09 DePuy Synthes Products, LLC Systeme et procedes pour un avancement rotulien chez des quadrupedes
EP2725995B8 (fr) 2011-06-30 2019-09-11 Lorio, Morgan, Packard Plaque pour colonne vertébrale
TWI554242B (zh) * 2011-09-06 2016-10-21 德派信迪思公司 全腕關節固定接骨板
KR20150032287A (ko) 2012-06-14 2015-03-25 신세스 게엠바하 경골 결절 전진과 관련된 임플란트/시술
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US11963847B2 (en) 2021-11-03 2024-04-23 DePuy Synthes Products, Inc. TPLO plate compression system and method
US12402923B2 (en) 2022-10-04 2025-09-02 DePuy Synthes Products, Inc. Offset hole for TPLO compression

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Also Published As

Publication number Publication date
EP1922003A4 (fr) 2011-03-02
US20060212035A1 (en) 2006-09-21
US20120203283A1 (en) 2012-08-09
US8715324B2 (en) 2014-05-06
US8177818B2 (en) 2012-05-15
EP1922003B1 (fr) 2016-03-23
WO2007030374A3 (fr) 2007-05-18
EP1922003A2 (fr) 2008-05-21

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